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Fixes a bug in (mainly) IPv6 BGP.
Stack variable may be used unitialized and that would lead to spurious rta_free(), which may cause crash. The bug was introduced in 1.4.1 from merging add-path branch. Thanks to Peter Andreev for reporting it and Alexander V. Chernikov for resolving it.
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@ -1082,7 +1082,7 @@ bgp_do_rx_update(struct bgp_conn *conn,
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{
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struct bgp_proto *p = conn->bgp;
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struct rte_src *src = p->p.main_source;
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rta *a0, *a;
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rta *a0, *a = NULL;
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ip_addr prefix;
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int pxlen, err = 0;
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u32 path_id = 0;
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@ -1115,7 +1115,6 @@ bgp_do_rx_update(struct bgp_conn *conn,
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if (a0 && ! bgp_set_next_hop(p, a0))
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a0 = NULL;
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a = NULL;
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last_id = 0;
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src = p->p.main_source;
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@ -1187,7 +1186,7 @@ bgp_do_rx_update(struct bgp_conn *conn,
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byte *start, *x;
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int len, len0;
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unsigned af, sub;
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rta *a0, *a;
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rta *a0, *a = NULL;
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ip_addr prefix;
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int pxlen, err = 0;
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u32 path_id = 0;
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@ -1234,7 +1233,6 @@ bgp_do_rx_update(struct bgp_conn *conn,
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if (a0 && ! bgp_set_next_hop(p, a0))
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a0 = NULL;
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a = NULL;
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last_id = 0;
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src = p->p.main_source;
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